"Haiku, the open source re-creation of BeOS, threatens to become 'The Duke Nukem of operating systems', joked long-time contributor Ryan Leavengood. Actually, after eleven years of development, Haiku still falls four years short of Duke Nukem Forever's long delay, but few other projects have been so long in development. However, with the recent release of Alpha 4.1, Haiku is at last nearing general release." 2013 is going to be very exciting for Haiku.

Also, consider how many fans didn't make it along the way, won't see the release of Haiku... I asked this a ~demographer once, WRT Duke Nukem Forever - and it turns out that close to 1% of young (teens and 20s when DNF came out) people die over the course of a decade.